With difficults I realised one dual boot with these two systems. But two options named "Ramdisk options" are also present like possibility ? How delete these two options, I don't see them when trying to work with "VistaBootPRO 3.3".Is it a specific tool to do that ?Thanks

claudiush,You can read up on BCEeditwhich is Microsoft's command line tool to work with Boot Configuration Data.Thisappears to bean issue with VistaBootPRO.You can visit the VistaBootPro forums andsearch on 'Ramdisk'. It is usually related to partitions created for restoring an image. The one thread I read, the partitionwas made by Ghost 12 as a recovery boot partition.

I have also seen this several times on my systems. I did not install Windows 7 by creating a DVD from the downloaded ISO. Instead I used an extract program (Winrar) and expanded the ISO file to disk and ran setup.exe from there. I have been using this technique for years going back to the first Vista betas. It has its advantages and few minor disadvantages. The ramdisk options are actually recovery options very similar to what is on the install DVD. What I did was install VistaBootPro 3.3, backup the BCD, and then delete the "bad" Ramdisk option entry. On my system only one of Ramdisk options actually worked. Strange that you cant see it with VistaBootPro. On my system its called "Windows Recovery Environment". You should seeone entry in VBP on the View Settings page for each boot menu option item you see when booting your system.